K&N Universal Clamp-On Air Filter 4in FLG / 6-1/2in B / 4-1/2in T / 7in H

K&N Universal Clamp-On Air Filter 4in FLG / 6-1/2in B / 4-1/2in T / 7in H

Marsoni

M251S

$63.19

Get it in 3 business days with 1 day shipping. Friday, May 29

K&N Universal Clamp-On Air Filter 4in FLG / 6-1/2in B / 4-1/2in T / 7in HK&N's Universal Air Filters are designed and manufactured for a wide variety of applications including racing vehicles, radio controlled cars, generators, snowmobiles, tractors, and other applications. Regardless of the angle or offset diameter of the air intake, there is probably a K&N Universal air filter for your equipment. All filters are constructed with ultra strong molded pliable rubber flanges which absorb vibration and allow for secure

Easy Shipping

Quick Dispatch:

Your K&N Universal Clamp-On Air Filter 4in FLG / 6-1/2in B / 4-1/2in T / 7in H orders ship within 1-2 business days.

Delivery Options:

Standard: 3-7 business days
Fast: 2-3 business days
Express: 1-2 business days

Order Tracking:

You'll receive a tracking link by email once your K&N Universal Clamp-On Air Filter 4in FLG / 6-1/2in B / 4-1/2in T / 7in H ships.

Need Help?
Questions about K&N Universal Clamp-On Air Filter 4in FLG / 6-1/2in B / 4-1/2in T / 7in H, sizing, or delivery? We're just an email away.

Live Shipping Estimates:
Enter your location at checkout to see available shipping methods and costs for K&N Universal Clamp-On Air Filter 4in FLG / 6-1/2in B / 4-1/2in T / 7in H in your area.

Get Shipping Estimates

Country Zip/Postal Code

Exchange/Return Notes

We offer a 30-day return/exchange service after receiving.
Final sale items are not eligible for returns or exchanges.
To process your return/exchange, please contact us at [email protected]
Please click here for more details>>> Return & Exchange Policy

I installed this on a 2015 Acura RDX and it has been a fine replacement for the original air filter. The filter offers a good value and resembles the filter that it replaced and seems to be an equivalent replacement in every way. It fit into the housing perfectly and was just as easy to replace as the original filter was. The white color of the filter also makes it easy to see if an excess of dirt has built up on the filter. I'd recommend this filter. The materials are good, it offers equivalent functionality, and great value for the money.

WAS THIS REVIEW HELPFUL?YesReportShare

Reviewed in the United States on April 16, 2025

Nate D.

Boise, US

★★★★★ 5

Excellent quality and price

The picture above is of two different brand engine air filters. One is a Fram Extra Guard and the other is the KAX filter, which costs half as much. Can you tell which one is the cheaper KAX filter? There may be a difference in material that is not visible, but they feel and look the same. It seems like a safe bet to try out the KAX and see how well it performs/lasts.

WAS THIS REVIEW HELPFUL?YesReportShare

Reviewed in the United States on May 25, 2024